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A platform for research: civil engineering, architecture and urbanism
Research on the Fracture Evolution Characteristics and Mesoscopic Fracture Mechanism of Fissured Basalt Based on PFC2D
The surrounding rock of large underground engineering projects is often composed of hard rock, and defects such as mineral particles and micro-cracks in the hard rock, significantly affect the mechanical properties of the rock. To investigate the influence of micro-crack distribution on the mechanical behavior, damage evolution, and fracture mechanism of rock, a numerical simulation model of basalt with single crack was established using the particle flow code PFC2D, based on the widely distributed cryptocrystalline basalt in the Baihetan Hydropower Station. In this study, the laws of crack initiation, propagation, and connection in the basalt under loading were deeply studied; the influence of different crack angles on the deformation and strength of the rock mass was discussed; the evolution characteristics and fracture mechanism of the whole process of the basalt under different confining pressures were revealed. The results of this study are significant for further studies into the mechanical properties characterizing fissured rock masses, as well as providing guiding principles for the design of cavern support.
Research on the Fracture Evolution Characteristics and Mesoscopic Fracture Mechanism of Fissured Basalt Based on PFC2D
The surrounding rock of large underground engineering projects is often composed of hard rock, and defects such as mineral particles and micro-cracks in the hard rock, significantly affect the mechanical properties of the rock. To investigate the influence of micro-crack distribution on the mechanical behavior, damage evolution, and fracture mechanism of rock, a numerical simulation model of basalt with single crack was established using the particle flow code PFC2D, based on the widely distributed cryptocrystalline basalt in the Baihetan Hydropower Station. In this study, the laws of crack initiation, propagation, and connection in the basalt under loading were deeply studied; the influence of different crack angles on the deformation and strength of the rock mass was discussed; the evolution characteristics and fracture mechanism of the whole process of the basalt under different confining pressures were revealed. The results of this study are significant for further studies into the mechanical properties characterizing fissured rock masses, as well as providing guiding principles for the design of cavern support.
Research on the Fracture Evolution Characteristics and Mesoscopic Fracture Mechanism of Fissured Basalt Based on PFC2D
Lecture Notes in Civil Engineering
Xiang, Ping (editor) / Yang, Haifeng (editor) / Yan, Jianwei (editor) / Chen, Jun (author) / Liu, Ning (author) / Wang, Chaoyi (author) / Gao, Yaohui (author)
Frontier Research on High Performance Concrete and Mechanical Properties ; Chapter: 19 ; 221-235
2024-11-26
15 pages
Article/Chapter (Book)
Electronic Resource
English
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